Reflector search-light.



R. STRAUBEL BEFLEGTOB. SEARCH LIGHT. MPMUATIQN FILED Armee. 1912.v

Panted Dec.

w@ I w! mw w @w WM @u RUDQLF STRA'UIBELOF JENA, GERIVINY, ASSIGNOB TOMTHE FIRM 0F CARL ZEISS, 0F

- JENA, GERMANY. I

niirLncToa SEARCH-LIGHT.

Specification' of. Letters Patent.

Originalappl'ication led October 3, 1911, Serial No. 652,650. Divided and this application filed April 29,

1912. serial No. 694,039.

To all 'whom it mcy'concem: Be it known that I, RUDOLF STRAUBEL, a citizen of4 the German Empire, residing at Jena, Germany, have invented a new and useful Reflector Search-Light, (division of my prior application, SeriaLNo. 652,650, filed October 3, 1911,) of which the following is a specification. l

The invention relates vto reflector searchlights, the source of light of which emits light also in the opposite direction to the reflector.

It relatos to those that are furnished in this direction With a small auxiliary reflector, which may however be made inoperative by being moved either partially or totally out of the conc of rays, which it re.

41 fleets when in its principal position, such i movement permittlng a Widely opened cone of rays temporarily to be sent out immediately from the source of light. But the invention also relates to those search-lights of the type defined in .the rst sentence, in which a screen can be interposed between the source of light and the reflector in order' to canse the production by the reflector of the beam of liglit'to cease and to leave only the direct cone of rays.

' According to the invention both forms of search-light are united to form a single one j, in such a manner that the screen can only 'become operative, When `the auxiliary reflector is. inoperative, and vice versa. In

this Way the new search-light combines the advantages/of both the original forms, Without the tWo additional arrangementsvused simultaneously interfei;I ig With each other, e. y. causing an interruption in the transmission of light.

In the most developed form of ,the present invention the removal of the auxiliary reflector 'from its operative position in front of the source of light and the interposition of' the screen between the source of light and `i?, the main reflector is one operation, and re- Q movmg the screen out of its ^,.crat1ve posi- ',i tion betweenthe source of light and the main reflector and locating the auxiliary reflect-or in front of the source` of light is also one operation. For this purpose the auxiliary reflector' and the screen are positively coupled, being e. g. rigidly connected so as.

to form one piece, which may be pivoted for being turned from one operative pos1t1on into the other. vThe cone of rays, which is intercepted on its Way to the main .reflector by the screen in its operative position,.may be caused to again coperate with the direct cone of rays, by the screen being formed in a Well-known manner as a reflector on that side, which in its operative position it turns toward the source of light. According to the light distribution, Which the cone of rays, reflected by the screen reflector, is -in- Atended to yield,- its reflecting surface may have any suitable curvature, c. g. it may be is pivoted in the drum bo of the main reflector and crosses, in the example shown, the optical axis of the search-light at right angles. A rod ,Which engages with an arm (lo of the arbor d, serves for putting the reflectors in and out of operation. -Inthe position of the reflectors. shown in full lines the auxiliary reflector a is operative and the screen reflectorc is inoperative. The dotted lines show the auxiliary reflectorz a in its inoperative position and the screen reflector c inits operative position.

` I claim:

l. In a reflector search-light a source of light, a main reflector, an auxiliary reflector removably disposed on the opposite side of the source of light to the main reflector and av screen removablyr Adisposed betweenV the source of light'and the main reflector, the auxiliary reflector and the screcnbeing so combined. that either can only become operative, when the 'other is inoperative.

2. In 'a reflector search-light a source of light, a main reflector, an auxiliaryy reflector on the opposite side'of the source'of.

light to the main reflector, a .screen and means for s1multaneously removin the auxiliary reflector from its describe posi tion and interposing the screen between the source of light and the main reflector.

Patented Dee. 10,191.2. y

3. In a reflector search-light a source of' I light, a main reflector, an auxiliary reflector and a screen, this screen and the auxiliary reflector being rigidly connected auxiliary .reflector together', so as to form one piece, and this piece being pivoted for being turnecl from one position, in which the auxiliary .reflector is on the opposite Side of the source of light to the main reflector, and the screen is inoperative, into :mother position, in which the screen is interposed between the source of light. and the main relleetor, sind the auxiliary reflector is inoperative.

4. In e reflector search-light a, source of light, e main reflector, en auxiliary re- Hector and aiy screen formed es e reflector on that side, which in the operative position faces the source of light, this Screen and the being rigidly conneote together, so as to form one piece, and this piece being pivoted for being turned from one position, in which the auxiliary reflector is on the. opposite side of the Source 20 of light to the main reeotor, and the Screen iS inoperative, into another position, in which the screen is' interposed between the source of light and the main reflector, and the auxiliarylreieotor is inoperative.

BUD GLF S" RAUBEL Witnesses PAUL KRGER, FRHZ SANDER. 

